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Performance

· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
82
GRADE
B
FIX
3
REVIEW
2
PASS
9
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
60
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
84
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
82
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

5.76 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

12.26 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

89 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.003

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

5.76 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

12.38 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
16
9 PASS 2 REVIEW 3 FIX
F
Page Weight Budget
Action
2.6 MB transferred, 127 requests
FIX
2.6 MB transferred, 127 requests
Warning::
Page weighs 5.3 MB (2.6 MB transferred)
Warning::
Images are 1.3 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.3 MB
Warning::
JavaScript is 688 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 688 KB
Info::
Fonts are 421 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 421 KB
Warning::
127 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.55 g CO2 per page load
2.6 MB / 2.4 MB budget
2.6 MB transferred
127 requests
0.55 g CO2 per page load
Images 1.3 MiB 51%
JavaScript 688.3 KiB 26%
Fonts 421.5 KiB 16%
CSS 107.9 KiB 4%
Other 39.3 KiB 1%
HTML 33.8 KiB 1%
Other 9.4 KiB 0%
Other 5.8 KiB 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Over budget

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

D
Third-Party Impact
Action
97% third-party, 0 ms blocking
FIX
97% third-party, 0 ms blocking
Warning::
Third-party code accounts for 97% of page weight (2.5 MiB of 2.6 MiB)
Info::
Third-party blocking time is low (0 ms)
97%
First-party Third-party
D
JS Execution Cost
Action
3026ms total JS execution
FIX
3026ms total JS execution
Warning::
https://www.transfermarkt.com/: 1647ms CPU time
Warning::
Unattributable: 545ms CPU time
Info::
https://cdn.privacy-mgmt.com/wrapperMessagingWitho...: 222ms CPU time
Info::
https://tmssl.akamaized.net/js/vendor/jquery.min.j...: 123ms CPU time
Info::
https://tmsi.akamaized.net/js/svelte-components/us...: 101ms CPU time
Info::
Third-party scripts: 1379ms (46% of total)

Main Thread Breakdown

Other 35% Style & Layout 26% Script Evaluation 24% Script Parsing & Compilation 7% Rendering 4% Parse HTML & CSS 4%
ScriptTotalScriptingParse/CompileParty
https://www.transfermarkt.com/1647ms106ms7ms1st
Unattributable545ms20ms0ms3rd
https://cdn.privacy-mgmt.com/wrapperMessagingWithoutDetection.js222ms154ms21ms3rd
https://tmssl.akamaized.net/js/vendor/jquery.min.js?lm=1775572721123ms67ms7ms3rd
https://tmsi.akamaized.net/js/svelte-components/userbox/bundle.js101ms47ms47ms3rd
https://tmsi.akamaized.net/js/svelte-components/most-viewed-players/bundle.js97ms50ms44ms3rd
https://tmsi.akamaized.net/js/svelte-components/domain-switcher/bundle.js67ms29ms6ms3rd
https://tmsi.akamaized.net/js/svelte-components/statistic/bundle.js60ms45ms9ms3rd
https://tmsi.akamaized.net/js/svelte-components/modal/bundle.js60ms39ms14ms3rd
https://tmsi.akamaized.net/js/svelte-components/competition-tables/bundle.js55ms34ms18ms3rd

Showing top 10 of 11 scripts

C
Image Optimization
Action
64 images, 0 KB saveable
REVIEW
64 images, 0 KB saveable
Warning::
https://tmssl.akamaized.net//images/wappen/homepag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/logo/homepageS... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/logo/homepageN... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/wappen/homepag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/wappen/homepag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
data:image/gif;base64,R0lGODlhAQABAIAAAMLCwgAAACH5... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/wappen/homepag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/wappen/homepag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmsi.akamaized.net/head/tm_logo_rebrush.sv... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/logo/homepageS... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/wappen/homepag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/wappen/homepag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/logo/homepageS... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/logo/homepageW... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/wappen/homepag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/wappen/homepag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/wappen/homepag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
64 images 1.3 MB
0 oversized -0 KB
51 legacy format
17 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Font Loading
6 fonts (421 KB)
PASS
6 fonts (421 KB)
Info::
6 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

6

421 KB total

Render-blocking

0

of 6

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s FCP 5.8 s LCP 12.3 shttps://tmsi.akamaized.net/fonts/SourceSansPro-Bold700.woff2SourceSansPro-Bold700.w... https://tmsi.akamaized.net/fonts/SourceSansPro-Bold700.woff2 — 60.3 KiB — 0 ms — font-display: swaphttps://tmsi.akamaized.net/fonts/SourceSans3VF-Roman.woff2SourceSans3VF-Roman.woff2 https://tmsi.akamaized.net/fonts/SourceSans3VF-Roman.woff2 — 164.2 KiB — 0 ms — font-display: swaphttps://tmsi.akamaized.net/fonts/oswald-var.woff2oswald-var.woff2 https://tmsi.akamaized.net/fonts/oswald-var.woff2 — 65.2 KiB — 0 ms — font-display: swaphttps://tmsi.akamaized.net/fonts/SourceSansPro-Regular400.woff2SourceSansPro-Regular40... https://tmsi.akamaized.net/fonts/SourceSansPro-Regular400.woff2 — 61.5 KiB — 0 ms — font-display: swaphttps://tmsi.akamaized.net/fonts/Oswald-Bold700.woff2Oswald-Bold700.woff2 https://tmsi.akamaized.net/fonts/Oswald-Bold700.woff2 — 35.6 KiB — 0 ms — font-display: swaphttps://tmsi.akamaized.net/fonts/Oswald-Regular400.woff2Oswald-Regular400.woff2 https://tmsi.akamaized.net/fonts/Oswald-Regular400.woff2 — 34.7 KiB — 0 ms — font-display: swap
SourceSansPro-Bold700.w... woff2 swap
Size 60 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
SourceSans3VF-Roman.woff2 woff2 swap
Size 164 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
oswald-var.woff2 woff2 swap
Size 65 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
SourceSansPro-Regular40... woff2 swap
Size 61 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Oswald-Bold700.woff2 woff2 swap
Size 36 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Oswald-Regular400.woff2 woff2 swap
Size 35 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Optimization checklist
  • Preload critical fonts (priority=high)
  • Use woff2 format for all fonts
  • Set font-display to swap, optional, or fallback
  • Subset large fonts (≤100 KB each)

Fixing the unchecked items could save ~82 KB and ~164 ms

A+
JS Bundles
29 scripts, 48 KB unused
PASS
29 scripts, 48 KB unused
Warning::
https://tmsi.akamaized.net/js/svelte-components/us...: 25 KB unused (25%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.privacy-mgmt.com/wrapperMessagingWitho...: 23 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 48 KB
48 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://tmsi.akamaized.net/js/svelte-components/userbox/bundle.js98 KB25 KB (25%)✓3rd
https://cdn.privacy-mgmt.com/wrapperMessagingWithoutDetection.js54 KB23 KB (43%)✓3rd
https://tmsi.akamaized.net/js/svelte-components/competition-tables/bundle.js27 KB—✓3rd
https://cp.transfermarkt.com/chunks/cp-chunk-cmp-sourcepoint.20260407085949-81af24fb00.d7ebb90961dc744d0114.js3 KB—✓3rd
https://tmssl.akamaized.net/js/startseite/newsrotation_mobile.js?lm=17755727211 KB—✓3rd
https://tmssl.akamaized.net/js/zecSlider.js?lm=17755727211 KB—✓3rd
https://tmssl.akamaized.net/js/main.js?lm=17755727215 KB—✓3rd
https://tmssl.akamaized.net/js/chosen.ajaxaddition.jquery.js?lm=17755727213 KB—✓3rd
https://tmssl.akamaized.net/js/functions.js?lm=17755727212 KB—✓3rd
https://tmssl.akamaized.net/js/suche-mobil.js?lm=17755727211 KB—✓3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
A+
HTTP Caching
max-age=120 (2 minutes)
PASS
max-age=120 (2 minutes)
Info::
Cache-Control header is set
Got: public, max-age=120, must-revalidate, stale-while-revalidate=30, stale-if-error=300
Info::
Effective TTL: 2 minutes (max-age=120)
Info::
Last-Modified header present
Cache-Control

public, max-age=120, must-revalidate, stale-while-revalidate=30, stale-if-error=300

DirectiveValueMeaning
public—Any cache may store this response
max-age120Cache for 2 minutes
must-revalidate—Must recheck with server after expiry
stale-while-revalidate30Serve stale for 30 seconds while fetching fresh
stale-if-error300
Effective TTL: 120 seconds
Network Waterfall
127 requests over 0ms
INFO

Performance analysis not available for this result.

Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
46% of JavaScript execution is third-party
First-party Third-party 1379ms · 453KB · €15/mo
Unattributable
Other
Costly
Execution 545ms
Transfer 0 KB
Monthly Cost €6/mo
cdn.privacy-mgmt.com
Other
Costly
Execution 222ms
Transfer 54 KB
Unused 43%
Monthly Cost €2/mo
tmssl.akamaized.net
Other
Optional
Execution 123ms
Transfer 29 KB
Monthly Cost €1/mo
tmsi.akamaized.net
Other
Optional
Execution 101ms
Transfer 98 KB
Unused 25%
Monthly Cost €1/mo
tmsi.akamaized.net
Other
Optional
Execution 97ms
Transfer 108 KB
Monthly Cost €1/mo
tmsi.akamaized.net
Other
Optional
Execution 67ms
Transfer 21 KB
Monthly Cost €1/mo
tmsi.akamaized.net
Other
Optional
Execution 60ms
Transfer 29 KB
Monthly Cost €1/mo
tmsi.akamaized.net
Other
Optional
Execution 60ms
Transfer 36 KB
Monthly Cost €1/mo
tmsi.akamaized.net
Other
Optional
Execution 55ms
Transfer 27 KB
Monthly Cost €1/mo
tmsi.akamaized.net
Other
Optional
Execution 51ms
Transfer 50 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • Unattributable adds 545ms and costs ~€6/month
  • cdn.privacy-mgmt.com adds 222ms and costs ~€2/month

46% of JavaScript execution time comes from third-party scripts.

Why this matters

Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.

Learn more ▾

Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.

Source: web.dev / HTTP Archive Web Almanac

Unattributable takes 545ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

cdn.privacy-mgmt.com takes 222ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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